1 /*
2 * Copyright (c) 1993-1997, Silicon Graphics, Inc.
3 * ALL RIGHTS RESERVED
4 * Permission to use, copy, modify, and distribute this software for
5 * any purpose and without fee is hereby granted, provided that the above
6 * copyright notice appear in all copies and that both the copyright notice
7 * and this permission notice appear in supporting documentation, and that
8 * the name of Silicon Graphics, Inc. not be used in advertising
9 * or publicity pertaining to distribution of the software without specific,
10 * written prior permission.
11 *
12 * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
13 * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
14 * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
15 * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
16 * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
17 * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
18 * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
19 * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
20 * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
21 * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
23 * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
24 *
25 * US Government Users Restricted Rights
26 * Use, duplication, or disclosure by the Government is subject to
27 * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
28 * (c)(1)(ii) of the Rights in Technical Data and Computer Software
29 * clause at DFARS 252.227-7013 and/or in similar or successor
30 * clauses in the FAR or the DOD or NASA FAR Supplement.
31 * Unpublished-- rights reserved under the copyright laws of the
32 * United States. Contractor/manufacturer is Silicon Graphics,
33 * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
34 *
35 * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
36 */
37
38 /*
39 * model.c
40 * This program demonstrates modeling transformations
41 */
42 #include "glut_wrap.h"
43 #include <stdlib.h>
44
init(void)45 static void init(void)
46 {
47 glClearColor (0.0, 0.0, 0.0, 0.0);
48 glShadeModel (GL_FLAT);
49 }
50
draw_triangle(void)51 static void draw_triangle(void)
52 {
53 glBegin (GL_LINE_LOOP);
54 glVertex2f(0.0, 25.0);
55 glVertex2f(25.0, -25.0);
56 glVertex2f(-25.0, -25.0);
57 glEnd();
58 }
59
display(void)60 static void display(void)
61 {
62 glClear (GL_COLOR_BUFFER_BIT);
63 glColor3f (1.0, 1.0, 1.0);
64
65 glLoadIdentity ();
66 glColor3f (1.0, 1.0, 1.0);
67 draw_triangle ();
68
69 glEnable (GL_LINE_STIPPLE);
70 glLineStipple (1, 0xF0F0);
71 glLoadIdentity ();
72 glTranslatef (-20.0, 0.0, 0.0);
73 draw_triangle ();
74
75 glLineStipple (1, 0xF00F);
76 glLoadIdentity ();
77 glScalef (1.5, 0.5, 1.0);
78 draw_triangle ();
79
80 glLineStipple (1, 0x8888);
81 glLoadIdentity ();
82 glRotatef (90.0, 0.0, 0.0, 1.0);
83 draw_triangle ();
84 glDisable (GL_LINE_STIPPLE);
85
86 glFlush ();
87 }
88
reshape(int w,int h)89 static void reshape (int w, int h)
90 {
91 glViewport (0, 0, (GLsizei) w, (GLsizei) h);
92 glMatrixMode (GL_PROJECTION);
93 glLoadIdentity ();
94 if (w <= h)
95 glOrtho (-50.0, 50.0, -50.0*(GLfloat)h/(GLfloat)w,
96 50.0*(GLfloat)h/(GLfloat)w, -1.0, 1.0);
97 else
98 glOrtho (-50.0*(GLfloat)w/(GLfloat)h,
99 50.0*(GLfloat)w/(GLfloat)h, -50.0, 50.0, -1.0, 1.0);
100 glMatrixMode(GL_MODELVIEW);
101 }
102
103 /* ARGSUSED1 */
keyboard(unsigned char key,int x,int y)104 static void keyboard(unsigned char key, int x, int y)
105 {
106 switch (key) {
107 case 27:
108 exit(0);
109 break;
110 }
111 }
112
main(int argc,char ** argv)113 int main(int argc, char** argv)
114 {
115 glutInit(&argc, argv);
116 glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
117 glutInitWindowSize (500, 500);
118 glutInitWindowPosition (100, 100);
119 glutCreateWindow (argv[0]);
120 init ();
121 glutDisplayFunc(display);
122 glutReshapeFunc(reshape);
123 glutKeyboardFunc (keyboard);
124 glutMainLoop();
125 return 0;
126 }
127